JPH0855640A - Secondary battery charging method - Google Patents
Secondary battery charging methodInfo
- Publication number
- JPH0855640A JPH0855640A JP6189332A JP18933294A JPH0855640A JP H0855640 A JPH0855640 A JP H0855640A JP 6189332 A JP6189332 A JP 6189332A JP 18933294 A JP18933294 A JP 18933294A JP H0855640 A JPH0855640 A JP H0855640A
- Authority
- JP
- Japan
- Prior art keywords
- secondary battery
- power source
- memory effect
- charging
- charge
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Secondary Cells (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は二次電池の充電方法に係
り、特に所要の機能を常時発揮し得るような適正な充電
状態の確保を可能とする二次電池の充電方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of charging a secondary battery, and more particularly to a method of charging a secondary battery which can ensure a proper state of charge so that a required function can always be exhibited.
【０００２】[0002]
【従来の技術】ニッケル−水素二次電池、あるいはニッ
ケル−カドミウム二次電池などに代表される二次電池
は、たとえば携帯用電話機，コードレス電話機，パーソ
ナルハンデイホンシステム、あるいは携帯型撮像機など
各種の機器システムの作動（駆動）電源として、広く実
用化されている。すなわち、この種の二次電池は、充電
操作による電力の確保ないし貯蔵と、前記確保ないし貯
蔵した電力を電源とした負荷の駆動（放電）とを、繰り
返し行い得ることから、半永久的な電源として、各種の
機器システムに組み込まれ実用されている。2. Description of the Related Art Secondary batteries typified by nickel-hydrogen secondary batteries or nickel-cadmium secondary batteries are used in various types such as portable telephones, cordless telephones, personal handyphone systems, and portable image pickup devices. It is widely used as an operating (driving) power supply for equipment systems. That is, since this type of secondary battery can repeatedly perform securing or storing of electric power by charging operation and driving (discharging) of a load using the secured or stored electric power as a power source, it is a semi-permanent power source. It has been put into practical use by being incorporated into various equipment systems.
【０００３】ところで、二次電池はいずれの場合も、前
記したように充電および放電が主要な機能であり、特
に、間欠的に放電が繰り返される携帯型の電話機などの
場合は、短時間の放電（使用）および充電の繰り返しが
頻繁に行われる。つまり、携帯型の電話機などの場合
は、通話に対応して電源のon， offが繰り返され、その
都度放電（消費）が行われて電池電圧が低下する。ま
た、前記通話に伴う電力（電流）消費の他に、二次電池
の自己放電および自己放電以外の消費電流もあり、電池
電圧が一定の値以下になる駆動電源としての機能を果た
さなくなる。したがって、前記通話に対応する放電（消
費）などに何時でも十分に対応し得るように、二次電池
に対して適宜充電を行い所要の電源機能を確保してい
る。By the way, in any case, the secondary battery has a main function of charging and discharging as described above, and particularly in the case of a portable telephone in which discharge is repeated intermittently, discharge in a short time. (Use) and charging are frequently repeated. That is, in the case of a mobile phone or the like, the power supply is repeatedly turned on and off in response to a call, and discharge (consumption) is performed each time the battery voltage drops. In addition to the power (current) consumption associated with the call, there is also a self-discharge of the secondary battery and a consumption current other than the self-discharge, so that the battery cannot function as a driving power supply with a battery voltage of a certain value or less. Therefore, the secondary battery is appropriately charged to ensure the required power supply function so that the discharge (consumption) corresponding to the call can be sufficiently dealt with at any time.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、前記間
欠的に放電が繰り返され、さらに所要の充電が行われる
二次電池の場合、次のような不都合な問題がある。たと
えば、携帯型の電話機などの駆動電源としての利用で
は、電話機の利用頻度（使用状態）によって、放電，充
電が異なる。つまり、 (a)携帯型の電話機の使用頻度が
比較的少なく、かつその都度充電を行う場合、 (b)携帯
型の電話機の使用頻度が比較的多く、かつ充電を頻繁に
行わない場合などがある。ここで、 (a)携帯型の電話機
の使用頻度が比較的少なく、かつその都度充電を行う場
合は、いわゆる規格容量における放電量が少なくて（未
放電量，残量が多い）、新たな充電量（補充充電量）が
少ないことを意味する。一方、 (b)携帯型の電話機の使
用頻度が比較的多く、かつ充電を頻繁に行わない場合
は、逆に規格容量における放電量が多くて（未放電量，
残量が少ない）、新たな充電量（補充充電量）が多くな
ることを意味する。However, in the case of the secondary battery in which the discharge is intermittently repeated and the required charging is performed, there are the following inconvenient problems. For example, when used as a driving power source for a portable telephone or the like, discharging and charging differ depending on the frequency of use (state of use) of the telephone. In other words, (a) when the mobile phone is used less frequently and is charged each time, (b) when the mobile phone is used more frequently and is not charged frequently. is there. Here, (a) If the mobile phone is used less frequently and is charged each time, the amount of discharge in the so-called standard capacity is small (the amount of undischarged and the remaining amount is large) This means that the amount (replenishment charge amount) is small. On the other hand, (b) When the frequency of use of the mobile phone is relatively high and the mobile phone is not frequently charged, on the contrary, the discharge amount in the standard capacity is large (the undischarged amount,
This means that the new charge amount (replenishment charge amount) increases.
【０００５】ところで、前記二次電池の効率的な電源機
能は、満充電状態の充電量が放電可能な限界値まで、充
・放電されることが理想的といえる。しかしながら、現
実には、前記したような使用形態を採る場合が多く、充
・放電に寄与する電池構成物質（活物質）が十分に、作
用しない状態におかれる（メモリー効果という）ことが
ある。そして、このようなメモリー効果の発生（活物質
の不活性化）は、結果的に二次電池の駆動電源としての
機能を損傷し、さらには二次電池の寿命を左右すること
になる。By the way, it can be said that the efficient power supply function of the secondary battery is ideally charged and discharged up to the limit value at which the charge amount in the fully charged state can be discharged. However, in reality, the above-described usage form is often adopted, and the battery constituent material (active material) that contributes to charge and discharge may not be sufficiently operated (called a memory effect). The generation of such a memory effect (inactivation of the active material) consequently damages the function of the secondary battery as a driving power source, and further affects the life of the secondary battery.
【０００６】本発明は上記事情に対処してなされたもの
で、放電（消費）パターンなど異なる二次電池の場合で
も、メモリー効果による機能低減など回避し、駆動電源
としての充電を容易に確保し得る充電方法の提供を目的
とする。The present invention has been made in view of the above circumstances. Even in the case of a secondary battery having a different discharge (consumption) pattern, the function reduction due to the memory effect can be avoided, and the charging as a driving power source can be easily secured. The purpose is to provide a charging method to be obtained.
【０００７】[0007]
【課題を解決するための手段】本発明に係る二次電池の
充電方法は、二次電池のメモリー効果発生を検出し、二
次電池のリフレッシュ放電を行った後、定電流充電を行
うことを特徴とする。さらに具体的には、二次電池の充
電方法であって、規格容量の50％放電・消費を10回行っ
た時点で、二次電池のリフレッシュ放電を行ってから定
電流充電を行うことを特徴とする。 すなわち、本発明
は、常に所要の駆動電源として要する機能を確保するた
め、二次電池の使用状況（放電消費および充電の頻度や
量）を考慮し、いわゆるメモリー効果を除いて、起電機
能の定常的な保持発揮を図ったものである。つまり、放
電消費に対して十分関与しないため、不活性化し易い電
池活物質をリフレッシュさせ、長期間に亘って所要の二
次電池として機能させ得ることを骨子とした充電制御方
法である。A method of charging a secondary battery according to the present invention detects a memory effect of the secondary battery, refreshes the secondary battery, and then performs constant current charging. Characterize. More specifically, it is a method of charging a secondary battery, which is characterized by performing a refresh discharge of the secondary battery and then performing a constant current charge at the time of discharging and consuming 50% of the standard capacity 10 times. And That is, the present invention considers the usage status (discharge consumption and charging frequency and amount) of the secondary battery in order to always secure the function required as a required driving power source, and removes the so-called memory effect, and It is intended to maintain a steady state. In other words, it is a charge control method that is capable of refreshing a battery active material that is easily deactivated because it does not sufficiently contribute to discharge consumption and can function as a required secondary battery for a long period of time.
【０００８】そして、本発明は、二次電池においては規
格容量の50％を放電・消費を10回程度行った時点で、二
次電池にメモリー効果が発生していることに着目してな
されたものである。すなわち、本発明者は、前記規格容
量の50％を放電・消費を10回程度行った時点で、深夜時
間帯、たとえば2:00amに、満充電状態に定電流充電した
後、完全放電して電池電圧の降下状態を観測したとこ
ろ、図１に曲線ａで例示するように、正常時での電池電
圧の降下状態（曲線ｂ）に比べて、放電終止電圧までの
時間ｔ1 ，ｔ2 が異なっており、正常時に比べて、短時
間で放電終止電圧に達しているのは、メモリー効果が発
生していることに起因するとの知見を得た。また、この
ようなメモリー効果の発生に対しては、いわゆるリフレ
ッシュ放電を行うことが有効で、このリフレッシュ放電
後、定電流充電を行った場合、前記正常時での電池電圧
の降下状態と同様の傾向を採ることを確認した。The present invention was made paying attention to the fact that the secondary battery has a memory effect at the time of discharging and consuming 50% of the standard capacity about 10 times. It is a thing. That is, the inventor of the present invention, after discharging and consuming 50% of the standard capacity about 10 times, at midnight, for example, at 2:00 am, after constant current charging in a fully charged state, complete discharge. As a result of observing the battery voltage drop state, as illustrated by the curve a in FIG. 1, the time t 1 and t 2 until the discharge end voltage is higher than that in the normal battery voltage drop state (curve b). It is different, and it was found that the fact that the discharge end voltage is reached in a short time compared to the normal time is due to the occurrence of the memory effect. Further, in order to generate such a memory effect, it is effective to perform so-called refresh discharge, and when constant current charge is performed after this refresh discharge, the same battery voltage drop state as in the normal state is obtained. It was confirmed that the trend was taken.
【０００９】[0009]
【作用】本発明に係る二次電池の充電方法によれば、二
次電池に発生したいわゆるメモリー効果が除去されて、
起電部の活性が全体的に確保される。つまり、二次電池
の消費電流のパターンや充電パターンの相違に基づい
て、発生するメモリー効果を除去した形態として定電流
充電が行われる。そして、この定電流充電に当たって
は、前記のように、起電部における不活性化していた物
質（成分）が再度活性化されているため、常時、二次電
池はその規格容量を十分確保し、またその規格容量に対
応した駆動電源として機能することが可能となる。According to the secondary battery charging method of the present invention, the so-called memory effect generated in the secondary battery is eliminated,
The activity of the electromotive section is secured as a whole. That is, the constant current charging is performed as a form in which the generated memory effect is removed based on the difference in the consumption current pattern and the charging pattern of the secondary battery. Then, in this constant current charging, as described above, since the deactivated substance (component) in the electromotive section is reactivated, the secondary battery always secures its standard capacity sufficiently, Further, it becomes possible to function as a drive power source corresponding to the standard capacity.
【００１０】[0010]
【実施例】以下本発明に係る二次電池の充電方法を説明
する。EXAMPLES A method of charging a secondary battery according to the present invention will be described below.
【００１１】先ず、電源バックアップ機能付き時計を有
するマイコンが内蔵された充電器、および携帯型電話機
の動作・駆動電源として装着された二次電池（たとえば
ニッケル−カドミウム二次電池）を用意した。次いで、
前記充電器に二次電池をセットし、所要の定電流充電を
満充電状態に行った後、充電器から二次電池をリセット
し、再びセットするまでの時間をカウントして、この時
間が通常の使用時間（放電時間）△ｔ1 、すなわち満充
電時使用（放電）できる最大使用時間△T の50％以下の
時点を一つの目安とする。換言すると、前記満充電した
（規格容量に相当する）ことによって使用（放電）でき
る量の50％を一つの基準として、以後の定格での使用
（放電）回数をカウントして、その回数が10回を超えた
時点で、二次電池に残留（未放電）している充電容量
を、二次電池の終止電圧まで放電する。つまり、前記基
準値としての50％を超えた後の定格での使用（放電）回
数が10回を超えた時点では、メモリー効果の発生が認め
られるので、二次電池について、いわゆるリフレッシュ
処理を行ってから、改めて所要の定電流充電を行う。よ
り具体的には、前記規格容量の50％を放電・消費を10回
程度行った時点で、深夜時間帯、たとえば2:00amに自動
的にリフレッシュを行い、前記リフレッシュ終了後に定
電流充電に切り換えれば、翌朝使用時には満充電状態に
充電された形で使用し得る。なお、上記では時間などの
検出を電源バックアップ機能付きマイコンで行っている
が、時刻データを有する電波（たとえば短波放送の JJY
や時計制御用時刻電波）の受信で行うことも可能であ
る。First, a charger having a built-in microcomputer having a timepiece with a power source backup function and a secondary battery (eg, nickel-cadmium secondary battery) mounted as an operation / driving power source for a portable telephone were prepared. Then
After setting the secondary battery in the charger and performing the required constant current charging to the full charge state, reset the secondary battery from the charger and count the time until it is set again. The usage time (discharging time) Δt 1 , that is, a point of time that is 50% or less of the maximum usage time ΔT that can be used (discharged) at full charge is one guideline. In other words, 50% of the amount that can be used (discharged) when fully charged (corresponding to the standard capacity) is used as a standard, and the number of uses (discharges) at the subsequent ratings is counted, and the number of times is 10 When it exceeds the number of times, the charge capacity remaining (undischarged) in the secondary battery is discharged to the final voltage of the secondary battery. In other words, when the number of times of use (discharge) at the rated value after exceeding 50% as the reference value exceeds 10 times, a memory effect is observed to occur, so a so-called refresh process is performed on the secondary battery. Then, the required constant current charging is performed again. More specifically, when 50% of the standard capacity is discharged / consumed about 10 times, refresh is automatically performed at midnight, for example, 2:00 am, and then constant current charging is switched after the refresh is completed. If so, the next morning, it can be used in a fully charged state. In the above, the detection of time etc. is performed by the microcomputer with the power backup function, but the radio wave with time data (for example, JJY for short wave broadcasting)
It is also possible to receive by receiving the time radio wave for clock control).
【００１２】上記実施例では、充電器側にメモリー効果
発生チェック機能をもたせた形で充電制御を行ったが、
メモリー効果発生チェック機能を有するメモリー素子を
二次電池に付設することによっても行い得る。そして、
この場合には、複数の異なる二次電池が充電器にセット
されても、メモリー効果発生の情報を受けた二次電池の
みが選択的にリフレッシュされ、そのリフレッシュ後再
充電が行われることになるので、複数個の二次電池を使
用する電池搭載機器（たとえば携帯電話）に対して有効
である。In the above-mentioned embodiment, the charging control is carried out by providing the charger side with the memory effect occurrence check function.
It can also be carried out by attaching a memory element having a memory effect occurrence check function to a secondary battery. And
In this case, even if a plurality of different secondary batteries are set in the charger, only the secondary battery that has received the information about the memory effect occurrence is selectively refreshed and recharged after the refresh. Therefore, it is effective for a battery-equipped device (for example, a mobile phone) that uses a plurality of secondary batteries.
【００１３】なお、本発明は上記実施例に限定されるも
のでなく、発明の趣旨を逸脱しない範囲でいろいろの変
形を採り得る。The present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the invention.
【００１４】[0014]
【発明の効果】以上実施例の説明などから分かるよう
に、本発明の充電方法では、二次電池において発生し易
く、また二次電池の機能を損ない易いメモリー効果を確
実に排除して、常に所要の駆動電源として十分に機能す
るに足る充電が確実に行われる。つまり、携帯型電話機
の駆動不可能な状態などを容易に防止もしくは回避し得
るので、携帯型電子機器類の信頼性向上などに大きく寄
与するものといえる。As can be seen from the above description of the embodiments, in the charging method of the present invention, the memory effect that is likely to occur in the secondary battery and easily impairs the function of the secondary battery is surely excluded, and Charging sufficient to function sufficiently as a required driving power source is ensured. In other words, it is possible to easily prevent or avoid a state in which the mobile phone cannot be driven, and it can be said that this greatly contributes to the improvement of the reliability of the mobile electronic devices.
【図１】二次電池の正常な放電状態およびメモリー効果
が生じたときの放電状態例を模式的に示す曲線図。FIG. 1 is a curve diagram schematically showing a normal discharge state of a secondary battery and a discharge state example when a memory effect occurs.
なし None
Claims (2)
のメモリー効果発生を検出し、二次電池のリフレッシュ
放電を行った後、定電流充電を行うことを特徴とする二
次電池の充電方法。1. A method of charging a secondary battery, comprising detecting the occurrence of a memory effect in the secondary battery, performing refresh discharge of the secondary battery, and then performing constant current charging. Charging method.
の50％放電・消費後、定格放電を10回行った時点で、二
次電池のリフレッシュ放電を行ってから定電流充電を行
うことを特徴とする二次電池の充電方法。2. A method of charging a secondary battery, which comprises performing constant current charging after performing refresh discharge of the secondary battery after 10 times of rated discharge after 50% discharge / consumption of standard capacity. A method for charging a secondary battery, comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6189332A JPH0855640A (en) | 1994-08-11 | 1994-08-11 | Secondary battery charging method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6189332A JPH0855640A (en) | 1994-08-11 | 1994-08-11 | Secondary battery charging method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0855640A true JPH0855640A (en) | 1996-02-27 |
Family
ID=16239581
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6189332A Withdrawn JPH0855640A (en) | 1994-08-11 | 1994-08-11 | Secondary battery charging method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0855640A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7030590B2 (en) | 2002-03-25 | 2006-04-18 | Makita Corporation | Apparatus for refreshing batteries |
| CN100338841C (en) * | 2004-08-18 | 2007-09-19 | 神基科技股份有限公司 | Battery charge protecting method for portable electronic device |
| CN107871905A (en) * | 2016-09-26 | 2018-04-03 | 现代自动车株式会社 | The battery management system and method for vehicle |
-
1994
- 1994-08-11 JP JP6189332A patent/JPH0855640A/en not_active Withdrawn
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7030590B2 (en) | 2002-03-25 | 2006-04-18 | Makita Corporation | Apparatus for refreshing batteries |
| CN100338841C (en) * | 2004-08-18 | 2007-09-19 | 神基科技股份有限公司 | Battery charge protecting method for portable electronic device |
| CN107871905A (en) * | 2016-09-26 | 2018-04-03 | 现代自动车株式会社 | The battery management system and method for vehicle |
| KR20180033642A (en) * | 2016-09-26 | 2018-04-04 | 현대자동차주식회사 | System and method for battery management |
| US10576841B2 (en) | 2016-09-26 | 2020-03-03 | Hyundai Motor Company | Battery management system and method of vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20011106 |